Radio link monitoring method and apparatus

1. A radio link monitoring method, wherein when a user equipment (UE) performs radio link monitoring, the method comprises: monitoring, by the UE, a downlink signal of a primary serving cell to obtain a monitoring result; calculating a block error rate (BLER) of a synchronization signal (SS)/physical broadcast channel (PBCH) block (SS/PBCH block, SSB) using a primary synchronization signal (PSS), a secondary synchronization signal (SSS) or a PBCH demodulation reference signal (DMRS) for a preset beam direction in each SSB; determining, by the UE, an in-sync threshold according to mapping of the BLER of the SSB received by the UE; and comparing, by the UE, the monitoring result with the in-sync threshold to determine whether the UE is in an in-sync status.

2. The method of claim 1 , wherein the BLER of the SSB is a BLER of a new radio (NR) PBCH.

3. The method of claim 1 , wherein before calculating the BLER of the SSB, the method further comprises: when the UE is in an idle mode or a connected mode, determining a transmission period of the PSS, SSS, or PBCH DMRS according to configuration information transmitted by the network-side device.

4. The method of claim 3 , wherein the transmission period corresponds to a moving speed of the UE, wherein the transmission period corresponding to a first moving speed is smaller than the transmission period corresponding to a second moving speed, and the first moving speed is greater than the second moving speed.

5. The method of claim 1 , wherein after comparing, by the UE, the monitoring result with the in-sync threshold, the method further comprises: when the UE receives a signal instruction to adjust the in-sync threshold, transmitted by the network-side device, adjusting the in-sync threshold according to the signal indication.

6. A user equipment, comprising: a processor, wherein the processor is configured to: monitor a downlink signal of a primary serving cell to obtain a monitoring result; calculate a block error rate (BLER) of a synchronization signal (SS)/physical broadcast channel (PBCH) block (SS/PBCH block, SSB) using a primary synchronization signal (PSS), a secondary synchronization signal (SSS) or a PBCH demodulation reference signal (DMRS) for a preset beam direction in each SSB; determine an in-sync threshold according to mapping of the BLER of the SSB received by the UE; and compare the monitoring result with the in-sync threshold to determine whether the UE is in an in-sync status.

7. The user equipment of claim 6 , wherein the BLER of the SSB is a BLER of a new radio (NR) PBCH.

8. The user equipment of claim 6 , wherein the processor is further configured, when the UE is in an idle mode or a connected mode, to determine a transmission period of the PSS, SSS, or PBCH DMRS according to configuration information transmitted by the network-side device.

9. The user equipment of claim 8 , wherein the transmission period corresponds to a moving speed of the UE, the transmission period corresponding to a first moving speed is smaller than the transmission period corresponding to a second moving speed, and the first moving speed is greater than the second moving speed.

10. The user equipment of claim 6 , wherein the processor is further configured to: when the UE receives a signal indication for adjusting the in-sync threshold, transmitted by the network-side device, adjust the in-sync threshold according to the signal indication.

11. A non-transitory computer readable storage medium, storing a computer program, wherein the computer program, when executed by a processor, implements the steps of the method of claim 1 .